NIST Technicalendar September 22 to September 26, 2008 The NIST Technicalendar is issued each Friday. All items MUST be submitted electronically from this web page by 12:00 NOON each Wednesday unless otherwise stated in the NIST Technicalendar. The address for online weekly editions of the NIST Technicalendar and NIST Administrative Calendar is: http://www.nist.gov/tcal/.

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10:30 AM - Structured Software Assurance Models (ITL Seminar)
10:45 AM - Spin Correlations in the Geometrically Frustrated Pyrochlore Tb2Mo2O7

10:30 AM - Light field tuning of the emission spectrum of a semiconductor quantum dot

1:30 PM - ULTRACOLD PLASMA DYNAMICS IN A MAGNETIC FIELD

10:30 AM - Free Volumes in Nano-Scale Polymeric and Membrane Systems by Positron Annihilation Spectroscopy

10:30 AM - "Optimized effective potentials: Current status and challenges ahead"
1:30 PM - Statistical Limitations of "Top-Down" and "Bottom-Up" Nanofabrication

9/22 -- MONDAY

10:30 AM - SPONSORED BY THE TRUSTWORTHY SOFTWARE PROGRAM OF ITL: Structured Software Assurance Models (ITL Seminar)
For safety-, mission-, or security-critical systems, there are typically regulations or acquisition guidelines requiring a documented body of evidence to provide a compelling justification that the system satisfies specified critical properties. Current frameworks suggest the detailed outline of the final product but leave the truly meaningful and challenging aspects of arguing assurance to the developers and reviewers. We began with two major hypotheses. We selected a software notation suitable for building structured safety cases and applied it to three disparate assurance standards. Each of the three standard mapping efforts is discussed, along with the problems we encountered. In addition to the standards, we used the notation to structure an assurance case for a practical security-critical system, and we describe the lessons learned from that experience. We conclude with practical options for using our mappings of the standards and how well our initial hypotheses are borne out by the project.
T. Scott Ankrum , Senior Software Systems Engineer, MITRE Corporation.
Building 101, Lecture Room A. (NIST Contact: Tom Rhodes, 301-975-3295, trhodes@nist.gov)

10:45 AM - NIST CENTER FOR NEUTRON RESEARCH SEMINAR: Spin Correlations in the Geometrically Frustrated Pyrochlore Tb2Mo2O7
Geometrically frustrated magnets hold great interest in the condensed matter physics community, as they often exhibit unusual physical properties. The compound they study, Tb2Mo2O7, stands at an interesting crossroads, being a representative of both the Mo-based pyrochlores and the Tb-based pyrochlores. The Mo-based compounds exhibit a metal-insulator transition between ferromagnetic metal states to spin glass insulators. The pyrochlore compound, TbMoO, crystallizes in a cubic space group in which both the Tb and Mo atoms form three-dimensional networks of corner-sharing tetrahedrons. Thus, each magnetic ion resides on a highly frustrated pyrochlore lattice. In this talk, the speaker will report the neutron scattering studies of the spin correlations of the geometrically frustrated pyrochlore TbMoO using single crystal samples. Magnetic susceptibility measurements confirm the spin-glass transition below T~ 24 k, similar to that observed in previous powder samples. Diffuse elastic peaks are observed at low temperatures, indicating short-range ordering of the Tb moments in an arrangement where the Tb moments are slightly rotated from the preferred directions of the spin ice structure. In addition, a Q-independent signal is observed which likely originates from frozen, but completely uncorrelated, Tb moments. He will also discuss inelastic measurements on both single crystal and powder samples exhibiting the absence of sharp peaks due to crystal field excitations. These results will shed new lights on the understanding of the physics of Tb sublattice in this compound.
Deepak Singh , MIT. ,.
235 Bldg, Rm. E100. (NIST Contact: Jeff Lynn, 301-975-6246, jeffrey.lynn@nist.gov)


9/23 -- TUESDAY

10:30 AM - ATOMIC PHYSICS DIVISION SEMINAR: Light field tuning of the emission spectrum of a semiconductor quantum dot
When a strong monochromatic field is brought through resonance with an optically active transition, such as in a quantum dot exciton, the original states become hybrid or dressed states and are split by an amount determined by the laser field amplitude and the dipole moment (Rabi frequency), and the laser detuning. These dressed states are composite exciton-field states and undergo an anti-crossing as a function of detuning. Although these phenomena are well established in atomic systems, experiments in solids have only recently been reported1-4. Most experiments have been limited to absorption measurements, while emission is desired for a variety of devices such as single and entangled photon sources. Using photoluminescence in conjunction with a tunable laser field, we show in emission, that the exciton/biexciton complex in a single quantum dot can be fully dressed5. This allows all-optical control of a multi-excitonic system and makes accessible tailored photons for a variety of applications. A particularly interesting application I will discuss is the generation of entangled photon pairs, which are typically suppressed in quantum dot emission due to nondegenerate exciton states. [1] X. Xu, et al, Science 317, 929 (2007). [2] L. Robledo, et al., Science, 320, 772 (2008). [3] A. Muller, et al., Phys. Rev. Lett. 99, 187402 (2007). [4] G. Wrigge, I. Gerhardt, J. Hwang, G. Zumofen, and V. Sandoghar, Nat. Physics 4, 60 (2008). [5] A. Muller, W. Fang, J. Lawall and G. S. Solomon, Phys. Rev. Lett. 101, 027401 (2008).
Glenn Solomon , Joint Quantum Institute/NIST Atomic Physics Division.
221 Bldg, Rm. B-145. (NIST Contact: Gail Newrock, 301-975-3200, gail.newrock@nist.gov)


9/24 -- WEDNESDAY

1:30 PM - CNST ELECTRON PHYSICS GROUP SEMINAR: ULTRACOLD PLASMA DYNAMICS IN A MAGNETIC FIELD
Ultracold plasmas created by photoionizing a sample of laser cooled and trapped cold atoms, has extended the neutral plasma parameters by about two orders of magnitude, as the electron temperatures as low as 1 Kelvin. Previous studies focused on the study of free expansion and electron temperature measurement of the plasma without a magnetic field. In this talk, I will talk about a new technique, time-of-flight projection imaging technique, to study ultracold plasma dynamics with or without a magnetic field, such as plasma expansion and instabilities.
Xianli Zhang , Ph.D. Candidate, University of Maryland.
Bldg. 217, Rm. H107. (NIST Contact: Jabez McClelland, 301-975-3721, jabez.mcclelland@nist.gov)


9/25 -- THURSDAY

10:30 AM - MATERIALS AND CONSTRUCTION RESEARCH DIVISION SEMINAR: Free Volumes in Nano-Scale Polymeric and Membrane Systems by Positron Annihilation Spectroscopy
Positron annihilation spectroscopy coupled with a variable mono-energetic positron beam has been used to investigate surface and interfacial properties in thin polymeric films and coatings in recent years. Free-volume properties (size, distribution, fraction, and structure) have been measured from ortho-Positronium lifetime and the S parameter of Doppler broadening of energy spectra from annihilation radiation as a function of the depth (from the surface, interfaces, and to the bulk) and of the temperature in nano-scale polymeric films. A significant lower (17 K), and (11 K) of glass transition temperature than the bulk is observed near the surface and interface, respectively, in an 80 nm polystyrene film on Si substrate. This is interpreted as the different degree of free-volume distribution as a function of depth in nano-scale polymeric films. Recent results in the applications of positron annihilation spectroscopy to analyze multi-layer and chemical nanostructures of composite materials and membrane systems using positron spectroscopy will be presented. Other aspects of applying positron annihilation to the disciplines of chemistry, nanotechnology, chemical engineering, materials science will be discussed. 1. Principles and Applications of Positron and Positronium Chemistry; Jean, Y.C; Mallon, P.E.; Schrader, D.M., Eds.; World Sci.: Singapore, 2003. 2. Jean, Y.C. et al, Spectrochimica Acta A 2005, 61, 1683. 3. Chen, H.M. et al, Macromolecules 2007, 40, 7542. 4. Chen, H.M. et al, J. Polym. Sci. B: Polym. Phys. 2008, 46, 388.
Jerry Jean , Curators' Professor of Chemistry and Physics, Department of Chemistry,University of Missouri-Kansas.
226 Bldg, Rm. B317. (NIST Contact: Xiaohong Gu, 301-975-6523, xiaohong.gu@nist.gov)


9/26 -- FRIDAY

10:30 AM - PHYSICAL AND CHEMICAL PROPERTIES DIVISION SEMINAR: "Optimized effective potentials: Current status and challenges ahead"
Felipe Bulat , Research Associate.
Bldg. 221 (Physics), Rm. A366. (NIST Contact: Carlos Gonzalez, 301-975-4063, carlos.gonzalez@nist.gov)

1:30 PM - CNST NANOFABRICATION RESEARCH GROUP SEMINAR: Statistical Limitations of "Top-Down" and "Bottom-Up" Nanofabrication
Historically, errors in lithography (the "top-down" approach) were dominated by engineering issues such as aberrations, bandwidth, signal/noise, etc. But now lithography works at the nano-scale and fundamental physical principles have, in certain cases, become major sources of error. In contrast, self-assembly (the "bottom-up" approach) by it's very nature has always had to deal with fundamental statistical error sources such as, entropy, temperature, activation energy, etc.. Since both the "top-down" and "bottom-up" approaches will be used for nanofabrication in the future it is worthwhile to examine and compare the fundamental statistical limitations inherent in each approach. The "top-down" statistical issues that will be considered in this talk are how Quantum Mechanics limits resist edge smoothness, i.e., implies LER (Line Edge Roughness) and how Maxwell restricts illumination uniformity. With respect to "bottom-up", although the principles of statistical mechanics are well known there is still much that is not known about error generation in specific cases. To make a direct comparison with "top-down" in at least one particular case I will consider the edge variation statistics ("LER") of block-copolymers patterned using grapho-epitaxy.
Gregg Gallatin , Applied Math Solutions, LLC.
Bldg. 217, Rm. H107. (NIST Contact: James Liddle, 301-975-6050, james.liddle@nist.gov)


ADVANCE NOTICE

9/29/08 10:30 AM - CNST ELECTRON PHYSICS GROUP SEMINAR: CREATING HIGH PHASE-SPACE-DENSITY GAS OF HETERONUCLEAR MOLECULES
I will present experiments creating heteronuclear diatomic molecules from ultracold, quantum degenerate mixtures of atomic bosons and fermions. The work presented takes advantage of a two-body scattering resonance, known as a Feshbach resonance, to efficiently and selectively create the fermionic molecules. I will present studies of the weakly bound, highly vibrationally excited molecules created near the Feshbach resonance. These molecules participate in inelastic collisions with excess atoms in the trap. The inelastic loss rates are affected by the particular atoms involved in the collisions and are enhanced or suppressed depending on whether the colliding atoms are bosonic, fermionic, or distinguishable when compared to the molecule's constituent atoms. I will also present recent work that has pioneered the making of high phase-space-density gases of ultracold polar molecules in the ro-vibrational ground-state.
Josh Zirbel , Ph.D. Candidate, University of Colorado at Boulder.
Bldg. 217, Rm. H107. (NIST Contact: Jabez McClelland, 301-975-3721, jabez.mcclelland@nist.gov)

10/2/08 10:00 AM - DIRECTOR'S OFFICE, TECHNOLOGY SERVICES SEMINAR: Patenting Basics: For NIST Scientists & Engineers
The Office of Technology Partnerships is sponsoring a seminar entitled "Patenting Basics" on Thursday, October 2, at 10:00am – 12:00 noon in the Green Auditorium. The seminar will provide an understanding of the patenting process for NIST scientists, engineers and managers interested in learning about the procedure for seeking a patent following an invention disclosure. The Speaker, Elaine B. Gin, an Attorney-Advisor in the Office of Intellectual Property Policy and Enforcement, USPTO, will focus on such topics as what is a patent and what does it do, what is a patentable invention, what is the difference between provisional and non-provisional patent applications, the concept of "obviousness" and more. Patenting is one of the many tools that NIST uses to attract the private investment necessary for commercialization of its innovative technology.
Elaine Gin , Attorney-Advisor in the Office of Intellectual Property Policy and Enforcement, USPTO.
Administration Bldg, Green Auditorium. (NIST Contact: Dr. Jack Pevenstein, 301-975-5519, jack.pevenstein@nist.gov) http://www-i.nist.gov/div222/InventorHandbook/patenting_basics.pdf

10/2/08 10:30 AM - CNST NANOTECHNOLOGY SEMINAR SERIES: Ferromagnetic Resonance Imaging with Magnetic Resonance Force Microscopy
Magnetic resonance force microscopy achieves very high resolution three-dimensional imaging capabilities of magnetic resonance imaging by taking advantage of very high sensitivity force detection. This enables non-contacting, microscopic studies and imaging of a broad range of materials. We have demonstrated scanned probe Ferromagnetic Resonance (FMR) imaging in ferromagnets where the the strong interactions between spins invalidates the assumptions underlying conventional magnetic resonance imaging. We present a new approach to localizing the resonant volume in an FMR measurement in ferromagnetic films. Our model accurately describes our FMR images and provides the basis for submicron scanned probe FMR imaging of films and buried ferromagnetic elements. Ref: "Local Ferromagnetic Resonance Imaging with Magnetic Resonance Force Microscopy," Yu. Obukhov, D.V. Pelekhov, J. Kim, P. Banerjee, I. Martin, E. Nazaretski, R. Movshovich, S. An, T.J. Gramila, S. Batra, and P. C. Hammel, PRL 100, 197601 (2008).
Chris Hammel , Ohio State University.
Bldg. 215, Rm. C103. (NIST Contact: Nikolai Zhitenev, 301-975-6039, nikolai.zhitenev@nist.gov)

10/3/08 10:30 AM - NIST COLLOQUIUM SERIES: Pioneers of Quantum Computation
This talk profiles the persons whose insights and visions created the subject of quantum information science. Some famous, some not, they all thought deeply about the puzzles and contradictions that were apparent to the founders of quantum theory. After many years of germination, the confluence of their understandings brought the possibilities of quantum computing and quantum communications dramatically onto the scientific scene in the 1990s. Dr.DiVincenzo has explored quantum information theory and the physical realizations of quantum computers for about 15 years. In particular, he is known for proposing a set of five criteria (commonly called the DiVincenzo criteria) for the physical implementation of quantum computers.
David DiVincenzo , Manager, Quantum Information Group, IBM Watson Research Center.
Administration Building, Green Auditorium. (NIST Contact: Kum Ham, 301-975-4203, kham@nist.gov)
Special Assistance Available

10/6/08 10:30 AM - NANOFABRICATION RESEARCH GROUP SEMINAR: Disruptive Technologies Through Nanostructures
As nanostructure technology continues to mature, fabrication processes which are compatible with realistic manufacturing techniques are now being developed. Consequently, disruptive technologies that were previously confined to laboratory test-beds are being implemented in commercial settings. This talk will focus on the impact of nanostructures in two areas: energy recovery and power electronics. Specifically, significant challenges associated with measurements and establishing of metrics for non-equilibrium charge and phonon transport in reduced-dimensional systems will be discussed.
Fred Sharifi , GE Research.
Bldg. 217, Rm. H107. (NIST Contact: Nikolai Zhitenev, 301-975-6039, nikolai.zhitenev@nist.gov)

10/7/08 10:00 AM - CERAMICS DIVISION SEMINAR: Picometer-Scale Accuracy in Pitch Measurements Using Microscopes
We discuss some metrology requirements of the optical and magnetic data storage industries. Current and new media formats require nanometer control of track pitch and feature size variation. Nanometer control implies picometer metrology. We use an ordinary open-loop AFM with additional offline calibration and measurement software to measure pitch and pitch variation. On a 144 nm pitch 2-Dimensional square grating, we measured average pitch to an accuracy of 40 pm (1s). Accuracy was confirmed by optical diffraction measurements at a national standards laboratory (PTB). We discuss the traceability path, showing how diffraction and microscopy work together to provide surprisingly low uncertainty. Our analysis method also works with SEM images. Measurements of a 35 nm pitch 2-dimensional grating showed individual pitch variation of 80 pm (1 s). This precision suggests one could measure the average pitch to an accuracy of 10 pm (1 s), thereby providing a very useful traceable standard. We also report pattern angle and skewness with resolution better than 0.1°.
Don Chernoff , Advanced Surface Microscopy Inc.
Materials Bldg, Rm. A252. (NIST Contact: Vincent Hackley, 301-975-5790, vincent.hackley@nist.gov)

10/8/08 1:30 PM - CENTER FOR NANOSCALE SCIENCE AND TECHNOLOGY SEMINAR: Measuring and Characterizing the Conductance of a Single Molecule
Measuring the conductance of a single molecule junction is becoming a standard measurement process in nanotechnology; however, there is a clear need for additional methods for measuring and characterizing a single molecule bound to two electrodes. This talk will discuss measuring the conductance of biological samples such as DNA and amino acids, as well as the development of new instruments for measuring and characterizing a single molecule junction. DNA studies were carried out in aqueous solution using readily available characterization techniques such as systematically changing the length, sequence, base-pair matching, temperature, and electrochemical potential of the system to attempt to elucidate the conduction mechanism. Such studies reinforced the need for faster measurement tools and better characterization techniques for single molecule junctions. Thus, the Conductance Screening Tool was developed to provide an order of magnitude increasing in the speed of measurement over previous designs. This tool has since been used to determine the conductance of individual amino acid residues without chemical modification. And finally, to advance characterization capabilities, a low temperature STM was developed and used to perform Inelastic Electron Tunneling Spectroscopy (IETS) on a single molecule bound to two electrodes. These measurements demonstrate that changes in the IET spectrum of a single molecule occur simultaneously with changes in the conductance and configuration of the molecular junction.
Joshua Hihath , Arizona State University.
Bldg. 217, Rm. H107. (NIST Contact: Vladimir Aksyuk, 301-975-2867, vladimir.aksyuk@nist.gov)

10/9/08 10:30 AM - SIGMA XI COLLOQUIUM: Lead in Potable Water as a Public Health Threat
The Centers for Disease Control assumed that lead in water problems were largely eliminated by the EPA Lead and Copper Rule. As a result, modern case management of childhood lead poisoning generally ignores potable water as a significant lead source. Recent cases of childhood lead poisoning attributed to water have demonstrated that detachment of particulate lead from solder and lead pipe to water, poses a serious concern, with potential lead doses from consuming a single glass of contaminated water above those obtained via consumption of lead paint chips. Because the EPA lead and copper rule sampling protocols were based on the assumption that lead in water was soluble Pb(II), EPA methods can fail to detect up to 99.8% of the lead which is actually present in water. Moreover, particulate lead detachment to water occurs some times and not others, making the problem impossible to detect with collection of single samples. These problems undoubtedly confounded prior attempts to establish cause and effect relationships between lead in water and blood lead-- and have also falsely reassured many consumers and utilities about the safety of tap water in homes built before the lead solder ban in 1986. Public health agencies and water utilities need to better educate themselves about the acute and chronic health hazards attributable to particulate lead in potable water.
Marc Edwards , Virginia Tech.
Administration Bldg, Red Auditorium. (NIST Contact: Dave Holbrook, 301-975-5202, dave.holbrook@nist.gov)
Special Assistance Available

10/9/08 10:30 AM - CNST NANOFABRICATION RESEARCH GROUP SEMINAR: Nanoparticles with key-lock interactions: from self-assembly to drug delivery
By decorating colloidal particles and other nano-objects with various biomolecules, one can introduce highly selective key-lock interactions between them. This leads to a new class of systems and problems in soft condensed matter physics. In my talk, I will review a number of theoretical possibilities and recent experimental achievements in this new field. First, I will discuss DNA-mediated self-assembly of nanostructures and nanoclusters. The specificity and tunability of the interactions result in a remarkable morphological diversity of in such systems. In some of the proposed schemes, DNA can be used to essentially "program" the self-assembly of a desired structure. The colloids with type-dependent interactions can also be used for experimental realization of one of the simplest self-replicating system. Its study may shed some light onto such important problems as prebiotic evolution and origin of life. Finally, I will discuss how cooperative key-lock binding can be also utilized to dramatically enhance cell specificity of drug delivery, e.g. in cancer treatment
Alexei Tkachenko , University of Michigan.
217 Bldg, Rm. H107. (NIST Contact: James Liddle, 301-975-6050, james.liddle@nist.gov)

10/13/08 10:30 AM - CNST ELECTRON PHYSICS GROUP SEMINAR: Optical Nuclear Physics Step 1: Trapping Th3+
The nucleus of the 229-Th isotope is unique in that it possesses a very low energy (7.5 eV) nuclear isomer. It may be possible to someday drive this transition coherently, opening the way for a new kind of optical clocks and more precise measurements of fundamental constants. The Th3+ ion is an ideal candidate for such work because of its simplified level structure and potentially long trap lifetime. I will present the recent progress towards the realization of an optical nuclear frequency standard, namely the trapping and observation of 232-Th3+ ions, by the Chapman and Kuzmich research groups at Georgia Tech.
Adam Steele , Ph.D. Candidate, Georgia Institute of Technology.
Bldg. 217, Rm. H107. (NIST Contact: Jabez McClelland, 301-975-3721, jabez.mcclelland@nist.gov)

10/20/08 8:00 AM - CHEMICAL SCIENCE AND TECHNOLOGY LABORATORY OFFICE SEMINAR: "Accelerating Innovation in 21st Century Biosciences: Identifying the Measurement Standards and Technological Challenges"
The National Institute of Standards and Technology (NIST) and the University of Maryland Biotechnology Institute (UMBI) are planning to co-host an October 20-24, 2008 Conference (Symposium and Workshop) focused on identifying and prioritizing measurement, standards, and technology needs that represent barriers to innovation, and impediments to achieving maximal societal and economic benefits of new discoveries in the biosciences.
Invited Speakers , Various Organizations.
Administration Bldg, Red Auditorium. (NIST Contact: Willie May, 301-975-8300, wem@nist.gov) http://www.cstl.nist.gov/Biosciences.html
Special Assistance Available

10/20/08 10:30 AM - NANOFABRICATION RESEARCH GROUP SEMINAR: In-situ Studies of Nanoscale Phenomena: Are the Challenges Worth Taking?
High-resolution microscopy is more of a necessity than luxury in investigating nanoscale materials. In this talk, we elucidate this by discussing in-situ SEM/TEM (scanning/transmission electron microscopy) testing of mechanical behavior of materials. This approach provides unprecedented experimental capabilities such as simultaneously quantitative (strain-strain) and qualitative (deformation, dislocation, crack visualization) materials characterization, with the added benefit of monitoring 'cleanliness' of the experiments. Unfortunately, these environments (for example, the TEM) have serious space restrictions and pose challenges with equal proportion because of the drastic miniaturization required for the lab-on-a-chip type capabilities. We address the challenges using nanofabrication techniques and discuss several examples of micro/nanotechnology enabled experimental setups. While the focus of this talk remains on mechanical testing of nanoscale thin films or one dimensional materials, we present some new directions for the research in nanoscale materials for pressing applications such as energy conversion, sensors and actuators and micro-electronic devices. Particularly, we visit the multi-domain (thermal, electrical, mechanical etc) coupling phenomena, which can be predicted to be stronger than what we observe at the macro or even micro scales. An ongoing research on experimental multi-physics lab-on-a-chip will be presented.
Aman Haque , Pennsylvania State University.
Bldg. 217, Rm. H107. (NIST Contact: Vladimir Aksyuk, 301-975-2867, vladimir.aksyuk@nist.gov)

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MEETINGS ELSEWHERE


9/22 -- MONDAY

11:00 AM - CARNEGIE INSTITUTION OF WASHINGTON/GEOPHYSICAL LAB. SEMINAR: CO2 CAPTURE AND SEQUESTRATION
J. Tossell , Univ. of Maryland.
Bldg, Rm..
Greenewalt Bldg., GL-DTM Grounds, Carnegie Institution of Washington, DC. (NIST Contact: Alex Goncharov, 202-478-8900, seminar@lists.ciw.edu)



9/23 -- TUESDAY

No Scheduled Events

9/24 -- WEDNESDAY

No Scheduled Events

9/25 -- THURSDAY

No Scheduled Events

9/26 -- FRIDAY

No Scheduled Events

ADVANCE NOTICE

No Scheduled Events

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TALKS BY NIST PERSONNEL

HUDSON, L. : LASER PRODUCED X-RAY SOURCES.
International Forum on Future Directions in Atomic and Condensed Matter Research and Applications, Melbourne, Australia, 9/22.

KARIM, A. : EFFECT OF NANOPARTICLES ON POLYMER BLENDS AND THIN FILM COATINGS.
Functional Nanofillers Conference, Atlanta, GA, 9/23.

JONES, R. : EVOLUTION OF 3D STRUCTURE IN TEMPLATED BCP FILMS.
Annual Users Meeting, Center for Nanophase Materials, Oak Ridge National Laboratory, Oak Ridge, TN, 9/24.

SIMON, JR., C. : COMBINATORIAL POLYMER SCAFFOLD LIBRARIES.
Virginia Polytechnic Institute / Department of Materials Science and Engineering, Blacksburg, VA, USA, 9/25.

SIMMON, E. (Co-Author: J.Messina , Computer Scientist - NIST, Gaithersburg, MD, john.messina@nist.gov) : SCRIBA: A CROSS - PLATFORM DATA ENTRY TOOL FOR IPC 175X VERSION 2.0.
IPC Midwest, Schaumburg, IL, 9/25.

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ANNOUNCEMENTS

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NIST WEB SITE ANNOUNCEMENTS

No Web Site announcements this week.

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For more information, contact Ms. Sharon Hallman, Editor, Stop 2500, National Institute of Standards and Technology, Gaithersburg MD 20899-2500; Telephone: 301-975-TCAL (3570); Fax: 301-926-4431; or Email: tcal@nist.gov.

All lectures and meetings are open unless otherwise stated.

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